diff --git a/src/app/api/__tests__/copy-renwei.test.ts b/src/app/api/__tests__/copy-renwei.test.ts
index b846ee5..c027f5b 100644
--- a/src/app/api/__tests__/copy-renwei.test.ts
+++ b/src/app/api/__tests__/copy-renwei.test.ts
@@ -87,13 +87,18 @@ describe("renwei copy optimization API route", () => {
         goal: "",
         intensity: "light",
         user_instructions: "保留口语。",
+        publish_target: "朋友圈",
       }),
     );
     const body = (await response.json()) as {
+      case: { id: string; case_type: string };
+      result_version: { id: string; version: number };
       result: { optimized_text: string; change_notes: unknown[] };
     };
 
     expect(response.status).toBe(200);
+    expect(body.case.case_type).toBe("human_copy");
+    expect(body.result_version.version).toBe(1);
     expect(body.result.optimized_text).toBe("我把这段文案顺了一下。");
     expect(body.result.change_notes).toHaveLength(1);
     expect(llmMocks.generateValidatedJson).toHaveBeenCalledWith(
@@ -103,6 +108,32 @@ describe("renwei copy optimization API route", () => {
     );
   });
 
+  it("saves LLM failures as failed human-copy cases", async () => {
+    llmMocks.generateValidatedJson.mockRejectedValueOnce(
+      new Error("LLM response failed schema validation: optimized_text"),
+    );
+
+    const response = await optimizeCopy(
+      request({
+        source_text: "这是一段普通文案。",
+        intensity: "light",
+        publish_target: "私域",
+      }),
+    );
+    const body = (await response.json()) as {
+      error: string;
+      case?: { id: string; case_type: string };
+      result_version?: { id: string; version: number };
+    };
+
+    expect(response.status).toBe(502);
+    expect(body.error).toBe(
+      "LLM response failed schema validation: optimized_text",
+    );
+    expect(body.case?.case_type).toBe("human_copy");
+    expect(body.result_version?.version).toBe(1);
+  });
+
   it("surfaces LLM failures as a 502", async () => {
     llmMocks.generateValidatedJson.mockRejectedValueOnce(
       new Error("LLM response failed schema validation: optimized_text"),
diff --git a/src/app/api/copy/renwei-optimize/route.ts b/src/app/api/copy/renwei-optimize/route.ts
index 2e33192..649409a 100644
--- a/src/app/api/copy/renwei-optimize/route.ts
+++ b/src/app/api/copy/renwei-optimize/route.ts
@@ -2,7 +2,10 @@ import { NextResponse } from "next/server";
 import { z } from "zod";
 
 import { requireApiAccess } from "../../../../lib/api/auth";
+import { buildHumanCopyCaseSummary, createProcessStep, excerpt } from "../../../../lib/cases/summaries";
+import { getRepositoryFromRuntime } from "../../../../lib/db/repository";
 import { copyOptimizationRequestSchema } from "../../../../lib/domain/validation";
+import type { LlmAuditSummary } from "../../../../lib/llm/audit";
 import { LlmValidationError } from "../../../../lib/llm/client";
 import { optimizeRenweiCopy } from "../../../../lib/workflow/renwei-copy-optimizer";
 
@@ -14,22 +17,101 @@ export async function POST(request: Request) {
 
   try {
     const payload = copyOptimizationRequestSchema.parse(await request.json());
-    const result = await optimizeRenweiCopy(payload);
-    return NextResponse.json({ result });
+    const repository = getRepositoryFromRuntime();
+    const caseSummary = buildHumanCopyCaseSummary(payload);
+    const optimizationCase = await repository.createOptimizationCase({
+      case_type: "human_copy",
+      ...caseSummary,
+    });
+    await repository.saveCaseInput({
+      case_id: optimizationCase.id,
+      case_type: "human_copy",
+      article_job_id: null,
+      payload,
+    });
+
+    const startedAt = Date.now();
+    const llmAuditSummary: LlmAuditSummary[] = [];
+    try {
+      const result = await optimizeRenweiCopy(payload, {
+        onAuditSummary: (summary) => llmAuditSummary.push(summary),
+      });
+      const resultVersion = await repository.createOptimizationResultVersion({
+        case_id: optimizationCase.id,
+        case_type: "human_copy",
+        status: "optimized",
+        article_job_id: null,
+        article_revision: null,
+        result_summary: excerpt(result.optimized_text),
+        payload: result,
+        process_summary: [
+          createProcessStep({
+            stage: "human_copy_optimize",
+            startedAt,
+            endedAt: Date.now(),
+            status: "success",
+            producedResultVersion: true,
+          }),
+        ],
+        llm_audit_summary: llmAuditSummary,
+        error_stage: null,
+        error_summary: null,
+      });
+
+      return NextResponse.json({
+        case: { id: optimizationCase.id, case_type: "human_copy" },
+        result_version: { id: resultVersion.id, version: resultVersion.version },
+        result,
+      });
+    } catch (error) {
+      const message = errorMessage(error);
+      const resultVersion = await repository.createOptimizationResultVersion({
+        case_id: optimizationCase.id,
+        case_type: "human_copy",
+        status: "failed",
+        article_job_id: null,
+        article_revision: null,
+        result_summary: "",
+        payload: null,
+        process_summary: [
+          createProcessStep({
+            stage: "human_copy_optimize",
+            startedAt,
+            endedAt: Date.now(),
+            status: "failed",
+            errorSummary: message,
+            producedResultVersion: false,
+          }),
+        ],
+        llm_audit_summary: llmAuditSummary,
+        error_stage: "human_copy_optimize",
+        error_summary: message,
+      });
+
+      return NextResponse.json(
+        {
+          error: message,
+          case: { id: optimizationCase.id, case_type: "human_copy" },
+          result_version: { id: resultVersion.id, version: resultVersion.version },
+        },
+        { status: getErrorStatus(error) },
+      );
+    }
   } catch (error) {
     return jsonError(error, getErrorStatus(error));
   }
 }
 
-function jsonError(error: unknown, status: number) {
-  const message =
-    error instanceof z.ZodError
-      ? "请输入需要优化的文案"
-      : error instanceof Error
-        ? error.message
-        : "文案优化失败";
+function errorMessage(error: unknown) {
+  return error instanceof z.ZodError
+    ? "请输入需要优化的文案"
+    : error instanceof Error
+      ? error.message
+      : "文案优化失败";
+}
 
-  return NextResponse.json({ error: message }, { status });
+function jsonError(error: unknown, status: number) {
+  return NextResponse.json({ error: errorMessage(error) }, { status });
 }
 
 function getErrorStatus(error: unknown) {
diff --git a/src/components/renwei-copy-optimizer-panel.tsx b/src/components/renwei-copy-optimizer-panel.tsx
index 9e3a66a..d427c84 100644
--- a/src/components/renwei-copy-optimizer-panel.tsx
+++ b/src/components/renwei-copy-optimizer-panel.tsx
@@ -12,6 +12,8 @@ interface RenweiCopyOptimizerPanelProps {
 }
 
 interface CopyOptimizeResponse {
+  case?: { id: string; case_type: "human_copy" };
+  result_version?: { id: string; version: number };
   result?: CopyOptimizationResult;
   error?: string;
 }
@@ -33,7 +35,9 @@ export function RenweiCopyOptimizerPanel({
   const [intensity, setIntensity] =
     useState<CopyOptimizationIntensity>("light");
   const [userInstructions, setUserInstructions] = useState("");
+  const [publishTarget, setPublishTarget] = useState("朋友圈");
   const [result, setResult] = useState<CopyOptimizationResult | null>(null);
+  const [caseId, setCaseId] = useState<string | null>(null);
   const [message, setMessage] = useState("");
   const [isSubmitting, setIsSubmitting] = useState(false);
 
@@ -42,6 +46,7 @@ export function RenweiCopyOptimizerPanel({
     setIsSubmitting(true);
     setMessage("");
     setResult(null);
+    setCaseId(null);
 
     try {
       const response = await fetch("/api/copy/renwei-optimize", {
@@ -52,6 +57,7 @@ export function RenweiCopyOptimizerPanel({
           goal,
           intensity,
           user_instructions: userInstructions,
+          publish_target: publishTarget,
         }),
       });
       const body = (await response.json()) as CopyOptimizeResponse;
@@ -59,7 +65,8 @@ export function RenweiCopyOptimizerPanel({
         throw new Error(body.error ?? "文案优化失败");
       }
       setResult(body.result);
-      setMessage("文案优化完成。");
+      setCaseId(body.case?.id ?? null);
+      setMessage("文案优化完成，已保存到案例库。");
     } catch (error) {
       setMessage(error instanceof Error ? error.message : "文案优化失败");
     } finally {
@@ -117,6 +124,13 @@ export function RenweiCopyOptimizerPanel({
             onChange={(event) => setUserInstructions(event.target.value)}
           />
         </label>
+        <label>
+          <span>发布目标</span>
+          <input
+            value={publishTarget}
+            onChange={(event) => setPublishTarget(event.target.value)}
+          />
+        </label>
         {message ? <p className="status-text">{message}</p> : null}
       </form>
 
@@ -129,6 +143,11 @@ export function RenweiCopyOptimizerPanel({
         </div>
         {result ? (
           <>
+            {caseId ? (
+              <a className="text-link" href={`/cases/${caseId}`}>
+                查看案例详情
+              </a>
+            ) : null}
             <pre className="copy-result">{result.optimized_text}</pre>
             <section className="stack">
               <h3>改动说明</h3>
diff --git a/src/lib/db/schema.ts b/src/lib/db/schema.ts
index 47b4d9f..107f431 100644
--- a/src/lib/db/schema.ts
+++ b/src/lib/db/schema.ts
@@ -187,9 +187,6 @@ export function initializeSchema(db: Database.Database) {
     create index if not exists idx_scoring_runs_job_revision
       on scoring_runs(job_id, revision);
 
-    create index if not exists idx_scoring_runs_result_version
-      on scoring_runs(result_version_id);
-
     create index if not exists idx_optimization_cases_updated_at
       on optimization_cases(updated_at);
 
@@ -205,10 +202,50 @@ export function initializeSchema(db: Database.Database) {
     create index if not exists idx_publication_records_job_revision
       on publication_records(job_id, revision);
 
-    create index if not exists idx_publication_records_result_version
-      on publication_records(result_version_id);
-
     create index if not exists idx_performance_snapshots_publication
       on performance_snapshots(publication_id);
   `);
+
+  ensureColumn(db, "article_jobs", "case_id", "text");
+  ensureColumn(db, "scoring_runs", "result_version_id", "text");
+  ensureColumn(db, "scoring_runs", "case_type", "text not null default 'article'");
+  ensureColumn(db, "publication_records", "result_version_id", "text");
+  ensureColumn(
+    db,
+    "publication_records",
+    "publish_target",
+    "text not null default ''",
+  );
+
+  const publicationColumns = getTableColumns(db, "publication_records");
+  if (publicationColumns.includes("platform")) {
+    db.exec(
+      "update publication_records set publish_target = platform where publish_target = ''",
+    );
+  }
+
+  db.exec(`
+    create index if not exists idx_scoring_runs_result_version
+      on scoring_runs(result_version_id);
+
+    create index if not exists idx_publication_records_result_version
+      on publication_records(result_version_id);
+  `);
+}
+
+function getTableColumns(db: Database.Database, tableName: string) {
+  return db
+    .prepare(`pragma table_info(${tableName})`)
+    .all()
+    .map((row) => (row as { name: string }).name);
+}
+
+function ensureColumn(
+  db: Database.Database,
+  tableName: string,
+  columnName: string,
+  definition: string,
+) {
+  if (getTableColumns(db, tableName).includes(columnName)) return;
+  db.exec(`alter table ${tableName} add column ${columnName} ${definition}`);
 }
diff --git a/src/lib/workflow/renwei-copy-optimizer.ts b/src/lib/workflow/renwei-copy-optimizer.ts
index a5d6be0..91b50f8 100644
--- a/src/lib/workflow/renwei-copy-optimizer.ts
+++ b/src/lib/workflow/renwei-copy-optimizer.ts
@@ -3,7 +3,7 @@ import type {
   CopyOptimizationResult,
 } from "../domain/types";
 import { copyOptimizationResultSchema } from "../domain/validation";
-import { generateValidatedJson } from "../llm/client";
+import { generateValidatedJson, type GenerateInput } from "../llm/client";
 import {
   RENWEI_COPY_OPTIMIZER_SYSTEM_PROMPT,
   buildRenweiCopyOptimizationPrompt,
@@ -11,6 +11,7 @@ import {
 
 export async function optimizeRenweiCopy(
   input: CopyOptimizationRequest,
+  options: { onAuditSummary?: GenerateInput["onAuditSummary"] } = {},
 ): Promise<CopyOptimizationResult> {
   return generateValidatedJson({
     schema: copyOptimizationResultSchema,
@@ -18,5 +19,6 @@ export async function optimizeRenweiCopy(
     prompt: buildRenweiCopyOptimizationPrompt(input),
     temperature: 0.2,
     task: "renwei_copy_optimizer",
+    onAuditSummary: options.onAuditSummary,
   });
 }
diff --git a/tests/e2e/renwei-copy.spec.ts b/tests/e2e/renwei-copy.spec.ts
index 9e8fee5..2792d84 100644
--- a/tests/e2e/renwei-copy.spec.ts
+++ b/tests/e2e/renwei-copy.spec.ts
@@ -2,10 +2,14 @@ import { expect, test } from "@playwright/test";
 
 test("普通文案优化标签页可以生成文案结果", async ({ page }) => {
   await page.route("**/api/copy/renwei-optimize", async (route) => {
+    const payload = route.request().postDataJSON() as { publish_target?: string };
+    expect(payload.publish_target).toBe("朋友圈");
     await route.fulfill({
       status: 200,
       contentType: "application/json",
       body: JSON.stringify({
+        case: { id: "case_copy_1", case_type: "human_copy" },
+        result_version: { id: "ver_copy_1", version: 1 },
         result: {
           optimized_text: "我观察到大家越来越难进入心流了。",
           change_notes: [
@@ -42,12 +46,17 @@ test("普通文案优化标签页可以生成文案结果", async ({ page }) =>
 
   await page.getByLabel("访问密钥").fill("local-dev-key");
   await page.getByLabel("原始文案").fill("我观察到大家越来越难进入心流");
+  await page.getByLabel("发布目标").fill("朋友圈");
   await page.getByRole("button", { name: "优化文案" }).click();
 
   await expect(page.getByText("优化后文案")).toBeVisible();
   await expect(page.locator(".copy-result")).toContainText(
     "我观察到大家越来越难进入心流了。",
   );
+  await expect(page.getByRole("link", { name: "查看案例详情" })).toHaveAttribute(
+    "href",
+    "/cases/case_copy_1",
+  );
   await expect(page.getByText("改动说明")).toBeVisible();
   await expect(page.getByText("AI 味检查")).toBeVisible();
 });